Damper



Patented Feb. l4, I899.

S on E W U P M H 2 4 m 6 0 N DAM PER.

(Application filed Nov. 9, 1897.)

(No Model.)

Inventor.

Witnesses.

THE NORRIS PETERS 9o. wof o-Llmoq wumnmou. u. c,

UNITD STATES PATENT OFFICE.

HENDERSON MORTON POWERS, OF LANCASTER, PENNSYLVANIA.

DAMPER.

SPECIFICATION forming part of Letters Patent No. 619,342, dated February14, 1899.

Application filed November 9, 1397- Serial No. 657,929. (No model.)

To all whom it may concern:

Be it known that I, HENDERSON MORTON POWERS, a citizen of the UnitedStates, residing at Lancaster, in the county of Lancaster and State ofPennsylvania, have invented a new and useful Damper, of which thefollowing is a specification.'

My invention relates to an automatic draftregulating damper that isunder the control of the operator.

Further objects and advantages of my invention will appear in thefollowing description, and the novel feature thereof will beparticularly pointed out in the appended claims.

In the drawings, Figure 1 is a plan of my automatic damper in positionin a pipe, flue, or stack, appearing in section. Figs. 2 and 3 arelongitudinal sections of the pipe, flue, or stack, showing the automaticvalve in two positions, one for day and the other for night, in a fullside elevation. Fig. 4 is an end View of a pipe,fiue, or stack, showingthe automatic damper in a side elevation with the ring-plate in centralsection. Figs. 5 and 6 are plan views showing a portion of thedamper-plate and the key-handle, in combination with the trunnion, in adetached position.

Similar numerals of reference indicate corresponding parts in all thefigures of the drawings.

In carrying out my invention I employ a main plate 1, which correspondsin design with the shape of the pipe, flue, or stack should they beround, square, or hexagonal. The plate'l is provided at opposite pointswith eccentric trunnions 7 and 8, which are mounted in suitable bearings9 and 10 in the side of the pipe, flue, or stack and extend beyond theouter surface thereof. The eccentric trunnion 7 is cast or riveted tothe main plate 1, and the eccentric trunnion 8 is detached from plate 1and is cast to the turning key-handle 11. The trunnion 8 has a slotthrough it to fit in a correspondingly-shaped lug 12 cast to plate 1,and it is held to the plate 1 by a bolt 13, that passes through the slotin the eccentric trunnion 8 and through a hole in plate 1 and holds themsecurely together. The eccentric trunnion 8 can be detached from plate 1in a moment of time. Across the central opening of main plate 1 I inserta cross-bar 14, cast or riveted to plate 1. The

design of this cross-bar 14 is a hole 15 in the center of cross-bar 14to admit the stem of valve 16 to pass through it, the valve 16 beingsmaller in diameter than the main plate 1 and being held to thevalve-stem 17 by two jam-nuts 18, and the head 19 on the other end ofvalve-stem 17 will keep the valve 16 from becoming detached fromcross-bar 14 and valve 16 will Work automatically through hole 15 in thecenter of cross-bar 14:. When a gas explosion takes place,the Valve 16will rise and let the gas pass off through the pipe, flue, or stack.

The gage-lugs 20, that are cast tothe main plate 1 and shown in Figs. 2and 3, are for the purpose of regulating the central opening of mainplate 1 for night to let gas pass off through the pipe, flue, or stackand to keep the valve 16 free from soot and smoke and to hold andregulate the fire as designed by the operator. The lug 21, that is castto plate 1 and shown in Figs. 2 and 3 above the keyhandle trunnion 8, isfor the purpose of holding the damper where it is wanted to be held bythe operator.

In my invention of this automatic damper I get three distinct changes ofdraft-one for morning, one for midday, and one for night and all underthe control of the operator.

Having described my invention, What I claim is 1. In a damper, thecombination of a damper-plate having an Opening therein, lugs on oneside extending at right angles to the face thereof, a disk adapted torest on said lugs and to be moved therefrom, and means for limiting themovement of the disk away from the lugs.

2. In a damper, the combination of a damper-plate, a cross-bar having anopening in its center and extending across the opening in the damper,lugs extending from one surface of the damper, a disk adapted to rest onsaid lugs and to be moved therefrom, a rod secured to the disk andadapted to pass through, the opening in the cross bar, and means on theend of the rod to limit the movement of the disk, substantially asdescribed.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

HENDERSON MORTON POWERS.

Witnesses:

HARVEY B. LUTZ, OWEN P. BRIOKER.

